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Horse profile

Palazzo Serristori (USA)

2yo colt · Trainer A P O'Brien · Owner Mrs John Magnier Michael Tabor Derrick Smith
by Justify (USA) out of Outstanding (IRE) (Galileo)
1 run · 1 course · from Aug 2026
As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Last run 16 Aug 2026 · 8th of 10
KTB Profile

Palazzo Serristori is a lightly raced colt by Justify out of an Outstanding mare by Galileo. His dam has produced two winners from two runners to date. The sire's progeny have a 13.5% strike rate over 1m to 1m1f since 2008. He finished 8 of 10 having been held up in the Velo Official Coffee At The Curragh Irish EBF Maiden at the Curragh on good ground in Aug 2026.

Based on 1 archived run · run-style from 1 commented run since Aug 2026 · updated 8 Nov 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 82 the best of the last 1 graded (A or B) run · Curragh (IRE), 16 Aug 2026

How fast the horse ran, as points against the day-corrected standard time for its course and distance: 100 is the median GB Class 4 handicap winner on that code; one point is 0.1% of the standard time. A, B or C is how much the day's card could tell us, not how good the run was. What this means →

Flat 1 figure · too few for a breakdown

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 1 figure from 1 run · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 63A the best of the last 1 rated run · Curragh (IRE), 16 Aug 2026

What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →

Flat 1 figure · too few for a breakdown

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 1 figure from 1 run · as at 4 Oct 2026 · a record, not a forecast

Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.

Pedigree intelligence

Sire
Justify (USA)

Progeny in our archive have won 17.7% of 537 runs since May 2022 (98 horses).

Strongest over 6f – 7f (all codes): 23.2% from 151. Weakest over 1m – 1m1f (all codes): 13.8% from 167.

GoingRunsWinsSRvs sireThis horse
Firm100%−17.7—
Good to Firm751520%+2.3—
Good1673018%+0.30 from 1
Good to Soft59915.3%−2.4—
Soft761722.4%+4.7—
Heavy26311.5%−6.2—
Standard (AW)1332115.8%−1.9—
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f3266.7%+49—
6f – 7f1513523.2%+5.5—
1m – 1m1f1672313.8%−3.90 from 1
1m2f – 1m4f1762614.8%−2.9—
1m5f – 2m36822.2%+4.5—
2m1f – 2m4f4125%+7.3—

Flat and jumps together (all codes) · since May 2022 · as at 8 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam

2 siblings in the archive, 2 winners — best of them Masteroffoxhounds (USA) (1 win).

The wins came over 6f–1m.

ProduceRunsWinsWin tripsBest grade
Masteroffoxhounds (USA)611m—
Jeroboam (USA)916f—

Too few runs for meaningful splits. The full record is below.

Form

DateCourseRace PosBtn Wgt SpdKTB Jockey SP
2026 · 1 run
16 Aug 26 Curragh (IRE) Velo 'Official Coffee At The Curragh' Irish EBF Maiden 1m1f · Good · 10 ran Held up at the back - driven approaching final 2f with little response - stayed on same gait through closing stages - finished 8th beaten 6¾ lengths 8/10 3¼ 9-7 82A63A Ronan Whelan 14/1

Quick answers

How many races has Palazzo Serristori won?
Palazzo Serristori (USA) has yet to win, from 1 archived start in 2026.
Who trains Palazzo Serristori?
Palazzo Serristori (USA) is trained by A P O'Brien, who saddled the horse on its most recent run on 16 August 2026.
Who is Palazzo Serristori's sire?
Palazzo Serristori (USA) is by Justify (USA) out of Outstanding (IRE), whose sire is Galileo.
What is Palazzo Serristori's sire's record?
Justify (USA)'s progeny in our archive have won 17.7% of 537 runs since May 2022 (98 horses), Flat and jumps together. Strongest over 6f – 7f (all codes): 23.2% from 151. Weakest over 1m – 1m1f (all codes): 13.8% from 167.
Who are Palazzo Serristori's siblings?
Out of Outstanding (IRE), Palazzo Serristori (USA) has 2 other produce in our archive, 2 of them winners. Most wins: Masteroffoxhounds (USA) (1). The wins came over 6f–1m. As at Nov 2026.

Record shown from August 2026. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.